Course Audit - Summative Assessment # 2

Microbial phase where the Build up of toxic materials and other factors.starts.

• Stationary Phase

• Log Phase

• Lag Phase

• Death Phase

This is the maximum growth for most microorganisms

• 1 x 10^7

• 1 x 10^8

• 1 x 10^9

• 1 x 10^6

No known pathogen grows below pH of ___.

• 2.6

• 3.6

• 4.6

• 5.6

Optimal pH range for microbial growth in food

• 3.5-4.4

• 4.5-5.4

• 5.5-6.5

• 6.6-7.5

Which of the following is NOT a humectant?

• Salt

• Sugar

• Vegetable oil

• Propylene Glycol

Lowest water activity for pathogen growth

• 0.86

• 0.76

• 0.66

• 0.56

Dry environment-loving microorganisms

• Osmophilic

• Halophilic

• Xerophilic

• None of the above

Salt-loving microorganisms

• Xerophilic

• Halophilic

• Osmophilic

• None of the above

Type of microorganisms that requires little oxygen.

• Aerobic

• Anaerobic

• Facultative anaerobes

• Microaerophiles

Microorganisms that are both aerobic and anaerobic

• Microaerophiles

• Facultative anaerobes

• Both microaerophiles and facultative anaerobes

• None of the above